Machine for channeling rock for grindstones



(N0 Mode l.)

M. J, OOONNOIL MACHINE FOR OHANNBLING ROCK FOR GRINDSTONES, &c. No.307,792. Patented Nov. 11, 1884.

Fig. 2.

WITNESSES, llVl/f/VTOR.

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MICHAEL J. OOONNOR, OF LOUISVILLE, KENTUCKY.

MACHINE FOR CHANNELING ROCK FOR GKINDSTONES, 84C.

SPECIFICATION forming part of Letters Patent No. 307,792, dated November11, 1884:.

Application filed July 30, 1884. (No model.)

To all whom it may concern:

Be it known that I, MIonAnL J. OOoNNoR, a citizen of the United States,residing at Louisville, in the county of Jefferson and State ofKentucky, have invented certain new and useful Improvements in Machinesfor Channeling Rock for Grindstones, &c. and I hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, in which Figure l isan elevation of a machineembodying my invention. Fig. 2 is a plan View,partly in section, of the revolving toolarm and mechani' s n foractuating the same. Fig. 3 is a top View of the adjustable base forcolumn A. Fig. 4 is an enlarged detail View of the shaft 9 in section,loose pulley G, and clutch mechanism for causing the shaft g to rotatewith the pulley when the drill rises.

Like letters refer to like parts wherever they occur.

My invention relates to the construction'of apparatus for channeling andquarrying grindstone and other circular-shaped stone out of the solidrock. 7

Heretofore, so far as I am aware, it has been the general practice toquarry the stone in irregular blocks, and then to reduce them to theproper or desired form by picking, spalling, and scabling. Such aprocedure necessitates considerable labor and results in great waste ofmaterial, all of which it is the purpose of the present invention toavoid.

To this end the main feature of the invention consists in mounting thechanneling-tool or drill upon a revolving arm, which arm rotates arounda fixed axis, column, or post, so as to cause the tool to describe acircle while operating, thus quarrying the block in its ultimate form.

A second feature of the invention consists in actuating the rotating armor tool-carrier from the drill, so that its movement will alternate withand be controlled by the drill, and the machinery be thus relieved fromany strain consequent on the irregular action of either the arm ordrill.

There are other minor points of novelty which will hereinafter morefully appear.

I will now proceed to describe my inven tion more specifically, sothatothers skilled in the art to which it appertains may apply the same.

In the drawings, A indicates a column, post, or center support for thedrill or channeler, provided with a base or platform, Y, to which it issecured, being strengthened by ribs, as at y, if desired. The column Aextends through the base Y, and terminates in a rectangular foot, a, bymeans of which (and wedges or equivalent devices) it is anchored to therock when in operation.

Projecting through the base Y are screws S S, by means of which the baseand column may be adjusted, and pivoted to the column A are extension orsliding legs L L, which brace and stiffen the column A when properlyadjusted.

Secured to the column A is a gear or worm Wheel, I, the object of whichwill hereinafter appear.

B indicates a revolving arm or tool-carrier journaled on the post orcolumn A just over the gear or worm wheel I, and projecting at rightangles thereto, which arm supports the channeler or drill G.

The channeler or drill 0, being no part of the present invention, may beof any appror'ed form.

The drill, whatever its character, should be so connected with the armB, as at b, or otherwise, that it can be moved along the, arm to andfrom the columnAto increase or decrease the diameter of the stone to bequarried. Attached to the piston of the drill is the vertical rod D,having an eye, d, at each end, for securing the ends of a cord or band,E, which cord or band passes over guide-pulleys F and around apower-pulley, G. The power-pulley G is journaled loosely on a shaft, 9,which shaft is in turn j ournaled on the arm B, and provided with a wormor screw, H, which engages with the gear or worm wheel Ifattached to thecolumn A. The loose pulley G is provided with a clutch so arranged thatwhen the pulley is rotated by the rise of the drill-piston it clutchesthe shaft 9 and causes it and the wdrm or screw H to rotate with it,while in the reverse rotation of the pulley G it moves loosely on theshaft 9, and the shaft 9 can be held by a reverse clutch, if desired,

The construction being of the general character hereinbefore specified,the machine will be operated as follows: A square or rectangular hole,1), is formed in the rock It to be quarried. The rectangular foot a isplaced therein and tightly wedged therein by means of wedges w, themachine properly adjusted by means of the set-screws S S, and braced byadjusting the extension-legs L. The drill O is adjusted along therevolving arm 13 until the desired distance from the column A to givethe required diameter of stone is obtained, and is then properly securedthereto. Power is then applied to move the drill-piston, which, as itrises through the medium of rod D and cord E, applies power to thepulley G. Pulley G in this movement clutches and rotates shaft 9 and itsworm II, which as it gears with the fixed gear-wheel 1 causes the rotarymovement of the arm B a short distance. When the piston of drill Odescends, the pulley G rotates in reverse direction, moving loosely onthe shaft and the arm 13, whether held by a reverse clutch or otherwise,remains sta tionary during the operation of the drill. When the drillnext rises and falls, the above operations are repeated, and thus thedrill is advanced in a curved path until the circle is completed.

Having thus set forth the nature, operation, and advantages of myinvention, what I claim, and desire to secure by Letters Patent, is

1. In a machine for quarrying grindstones and like circular articles,the combination of a center post or column, a revolving drillcarrierjournaled thereon, said post and carrier being provided withintermeshing gear, a reciprocating drill mounted on the carrier, andconnections between the drill and gearing for transmitting the motion ofthe former to the latter, substantially as shown and described.

2. In a machine for quarrying grindstones and like circular articles,the combination of a center post or column, a revolving drillcarrierjournaled thereon, said post and carrier being provided withintermeshing gear, a reciprocating drill mounted on the revolvingdrill-carrier, a clutch located upon the operating gear-shaft, andconnections between the drill and clutch for operating the latter,substantially as shown and described.

3. In a machine for quarrying grindstones and like circular articles,the combination of a center post having a gear or worm wheel securedthereto, a revolving tool-carrier journaled on the center post, a worm,and a clutchpulley journaled on the revolving tool-carrier, areciprocating drill, and a band or cord for imparting the movement ofthe drill to the clutch-pulley, substantially as and for the purposesspecified.

4. In a machine for quarrying grindstoncs and like circular articles,the combination of the center post or column, A, having the worm-wheel Isecured thereto, the revolving tool-carrier B, journaled on the columnA, the WOIIHWhGEI H, having the clutch-pulley G, and journaled on therevolving tool-carrier, the reciprocating drill, the rod D, attachedthereto, the guide-pulleys F F, and the rope or band E, substantially asand for the purposes specified.

5. In a machine for quarrying grindstones and like circular articles,the combination of a center post, A, the base Y, having a centralperforation through which the post passes, the wedges w, the set-screwsS S, and the revolving drill-arm journaled on the center post,substantially as shown and described.

6. In a machine for quarrying grindstones and like circular articles,the combination of a center post, A, the base Y, having a centralMICHAEL J. O CONNOR.

\Vitnesses GEORGE M. DAVIE, J OHN MAsoN BROWN, XV. N. CALDWELL.

